Factual error: The flight attendants didn't do the safety briefing properly. None of the flight attendants show the demonstrations. Also, the safety briefing should be given during taxiing to the runway. But in the movie, the flight attendant had finished the safety briefing before the door of the plane closed. During the safety briefing, the flight attendant said that the aircraft has 6 emergency exits. How come a 747 has only 6 exits? A 747 in fact has 5 main deck exits on each side, which means on the main deck there are 10 exits. Judging by the picture of the plane on the DVD inner cover (New Line Platinum Series), the 747 used in the movie most likely is the 747-200 series, which means the upper deck has one emergency exits. All in makes the plane has 11 exits, almost double the number said by the flight attendant. And during the take off, when Alex looks outside the plane to the wing, he sees that the flaps are just being deployed. When a plane is taking off, the pilot needs to make sure that the flaps are deployed BEFORE they are actually on the runway. (00:10:05 - 00:17:00)
Other mistake: When the plane takes off in Alex's vision, the plane begins to go into a nosedive, and the entire left fuselage is blown apart, sucking many people out of the plane. The plane then explodes completely, but in reality, the plane just takes off, and explodes almost instantly afterwards. No struggling with the plane is shown in reality, nor is the plane going into a nosedive. This is also proven in FD5, which is a prequel. The jet engine explodes, leaving a flaming tail, and the plane spinning out of control. The plane just simply "explodes" without any signs of struggle.
Suggested correction: According to the news report, "Officials believe deterioration of silicon insulation on an electrical connector to the scavenger pump may have leaked combustible fluids. A spark in the fuel switch in the fuselage may have ignited the fuel line and proceeded to the fuel pump which would have set off the catastrophic explosion." This spark, in the premonition, happened while they were already in the air, which is why the damage occured how it did. However, in reality, Alex has his panic, and they're escorted off. So instead of already being up on the air, the spark happens as soon as the plane takes off instead. Further, when you compare the timeline of the explosion in the premonition and the explosion in real life, roughly the same amount of time has passed, placing the explosion at the same moment it should have been to start with.
Suggested correction: Death will find any way to make sure that someone dies when they're supposed to, so regardless of how it happens, how natural is it when an invisible force is causing the explosion? Plus, just because Alex had a vision of it does not mean that the real-life occurrence will happen in the same way. It doesn't really matter how the plane exploded; all that matters is that it did.
Continuity mistake: Alex buckles his seatbelt when he first sits down on the plane, before the girls ask him to move, making him have to unbuckle to move for them. When he wakes up after his premonition, he immediately jumps out of the seat, not buckled in.
Suggested correction: Since we don't know exactly when he started dreaming the premonition, it's easy to assume putting on the seat belt was part of the dream.
Other mistake: When Carter is basically trying to kill himself with the remaining "survivors" in his car, Billy makes a comment saying that when he saw Alex leaving Mrs. Lewton's place, Alex's shoe prints were in her blood and his prints were on the knife. All good and fine but there's just one thing that doesn't make much sense. Her house blew up right after he ran out, so could anyone still pull off any prints from the knife that killed her, and see footprints by her body? Wouldn't that evidence be gone in the explosion?
Suggested correction: Not necessarily. An explosion doesn't mean that everything around it is incinerated. Depending on where the explosion originated, certain items can be shielded from the blast/fire by larger objects, and I believe they mentioned that the fire caramelized the bloody footprints.
Factual error: When Ms. Lewton takes out her mother's favorite record album, the label is obviously a fake. None of John Denver's albums had his name written that large on the label.
Suggested correction: I think this is for two reasons:i) Copyright.ii) To show to the audience she is going to die by making the song obvious to them.
Suggested correction: No safety briefing is depicted in the film.
I guess you watched a different film than everyone else. The safety briefing can be heard, but you don't see it, which is the point of the mistake.
Bishop73